US149837A - Improvement in solar compasses - Google Patents

Improvement in solar compasses Download PDF

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Publication number
US149837A
US149837A US149837DA US149837A US 149837 A US149837 A US 149837A US 149837D A US149837D A US 149837DA US 149837 A US149837 A US 149837A
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US
United States
Prior art keywords
improvement
compasses
solar
solar compasses
sdlar
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Expired - Lifetime
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/34—Sun- or astro-compasses

Description

H. o. coDK.
SDlar-compasses.
Patented A r 2],1874.
US149837D Improvement in solar compasses Expired - Lifetime US149837A (en)

Publications (1)

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US149837A true US149837A (en) 1874-04-21

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ID=2219250

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US149837D Expired - Lifetime US149837A (en) Improvement in solar compasses

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2440827A (en) * 1945-08-20 1948-05-04 Jr Browning E Marean Navigational instrument
DE2817033A1 (en) * 1978-04-19 1979-10-25 Basf Ag REACTIVE COLORS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2440827A (en) * 1945-08-20 1948-05-04 Jr Browning E Marean Navigational instrument
DE2817033A1 (en) * 1978-04-19 1979-10-25 Basf Ag REACTIVE COLORS

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